On Fri, Sep 07, 2018 at 04:34:23PM +0300, Subbsd wrote: > > > > On 2018-09-05 10:04, Subbsd wrote: > > > > > Hi, > > > > > > > > > > I'm seeing a huge loss in performance ZFS after upgrading FreeBSD 12 > > > > > to latest revision (r338466 the moment) and related to ARC. > > > > > > Unfortunately, I can not conduct sufficiently serious regression tests > right now (e.g through benchmark tools, with statistics via PMC(3), > etc.). However, I can do a very surface comparison - for example with > find. > tested revision: 338520 > loader.conf settings: vfs.zfs.arc_max="128M" > > meta strategy ARC_STRATEGY_META_BALANCED result: > > % time find /usr/ports -type f > /dev/null > 0.495u 6.912s 7:20.88 1.6% 34+172k 289594+0io 0pf+0w > > meta strategy ARC_STRATEGY_META_ONLY: > % time find /usr/ports -type f > /dev/null > 0.721u 7.184s 4:57.18 2.6% 34+171k 300910+0io 0pf+0w > > So the difference in ~183 seconds. > Both test started after a full boot OS cycle.
Seems like a pretty substantial difference. Is this roughly the same performance that you had before the upgrade to -ALPHA4? _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
